People keep claiming that modern OOP languages aren’t “really OOP” because they don’t follow Alan Kay’s definition of “OOP”. I can see the logic here, even if I disagree the conclusion. More recently I’ve seen people start claiming that Kay invented objects entirely. This is factually incorrect. Alan Kay did not invent objects. They come from Simula, which the Smalltalk-72 manual cites as a major inspiration (pg 117). The famous 1981 Byte magazine issue that popularized Smalltalk and OOP explici...